Temperature Monitoring: Difference between revisions
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Created page with "Temperature data from around the space is to be log via Cacti.<br/> Sampling done with DS18S20 1-wire digital thermometer, these can be daisy chained of the other arduino and MQT..." |
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* [[Vending Machine]] in workshop (nanode) | * [[Vending Machine]] in workshop (nanode) | ||
* [[Energy Monitoring|Energy Monitor]] in blue room cupboard (XRF) | * [[Energy Monitoring|Energy Monitor]] in blue room cupboard (XRF) | ||
=== Cheap and cheerful thermistor workshop === | |||
I have a bag of surplus 47k thermistors (about 500) and I intend to build a number of circuits to measure temperature starting with the very simplest and culminating in a teachable HackSpace project with reasonable accuracy. We will put these devices in fridges, near heat sources, near doors, windows, indoors, outdoors, you name it. | |||
The component: | |||
* Listed in stores as "Future Electronics B4090K Thermistor 47k 5%" | |||
* I think it may be this one | |||
** http://uk.futureelectronics.com/en/Search.aspx?dsNav=Ny:True,Ro:0,Nea:True,N:477-4294920237 | |||
** http://uk.futureelectronics.com/en/Technologies/Product.aspx?ProductID=NTCLE100E3473JB0VISHAY8666240 | |||
* however, the Vishay product may be obsolete and the tolerance is listed as 1.5% rather than 5% | |||
<code> | |||
VISHAY | |||
NTCLE100 Series NTC 47 kOhm ±1.5 % Radial Leaded Standard Precision Thermistor | |||
Mfr Part#: NTCLE100E3473JB0 | |||
Packaging : BAG | |||
Std Packaging Qty: 500 | |||
Min Order Qty: 1 | |||
As low as: £0.1751 (GBP) | |||
In Stock: No | |||
Type: | |||
NTC | |||
Resistance: | |||
47 kO | |||
Tolerance (%): | |||
±1.5 % | |||
B-constant: | |||
4090 °K | |||
Temperature Range: | |||
-40 to +125 °C | |||
</code> | |||
Some Google digging reveals... | |||
* http://www.vishay.com/docs/29049/ntcle100.pdf | |||
* these thermistors are colour coded | |||
** Yellow Violet Orange Gold | |||
*** B25/85-VALUE = 4090K (+/- 5%) (the gold means 5%) | |||
The simplest circuits and Arduino code... | |||
* http://arduino.cc/playground/Main/InterfacingWithHardware#envtture | |||
** http://arduino.cc/playground/ComponentLib/Thermistor | |||
** http://arduino.cc/playground/ComponentLib/Thermistor2 | |||
** http://arduino.cc/playground/ComponentLib/Thermistor3 | |||
[[User:Msemtd|Michael Erskine]] 06:43, 14 December 2011 (EST) | |||
Revision as of 11:43, 14 December 2011
Temperature data from around the space is to be log via Cacti.
Sampling done with DS18S20 1-wire digital thermometer, these can be daisy chained of the other arduino and MQTT devices.
Aim to publish a standard format MQTT message that a script on Holly will decode and push to cacti
Posible Arduino to hook into
- Gatekeeper in members box room (arduino, ethernet)
- LED Matrix in studio (arduino mega, ethernet)
- Vending Machine in workshop (nanode)
- Energy Monitor in blue room cupboard (XRF)
Cheap and cheerful thermistor workshop
I have a bag of surplus 47k thermistors (about 500) and I intend to build a number of circuits to measure temperature starting with the very simplest and culminating in a teachable HackSpace project with reasonable accuracy. We will put these devices in fridges, near heat sources, near doors, windows, indoors, outdoors, you name it.
The component:
- Listed in stores as "Future Electronics B4090K Thermistor 47k 5%"
- I think it may be this one
- however, the Vishay product may be obsolete and the tolerance is listed as 1.5% rather than 5%
VISHAY
NTCLE100 Series NTC 47 kOhm ±1.5 % Radial Leaded Standard Precision Thermistor
Mfr Part#: NTCLE100E3473JB0
Packaging : BAG
Std Packaging Qty: 500
Min Order Qty: 1
As low as: £0.1751 (GBP)
In Stock: No
Type:
NTC
Resistance:
47 kO
Tolerance (%):
±1.5 %
B-constant:
4090 °K
Temperature Range:
-40 to +125 °C
Some Google digging reveals...
- http://www.vishay.com/docs/29049/ntcle100.pdf
- these thermistors are colour coded
- Yellow Violet Orange Gold
- B25/85-VALUE = 4090K (+/- 5%) (the gold means 5%)
- Yellow Violet Orange Gold
The simplest circuits and Arduino code...
Michael Erskine 06:43, 14 December 2011 (EST)
Old Notes
- Temp sensors dotted around space
- Nanode again
- Small wireless units or daisy chain of dalas one wires?
- Humidity sensor's?
- Push to cacti
- Query from irc